null pointers

null pointers

Posted Mar 19, 2008 21:22 UTC (Wed) by quotemstr (subscriber, #45331)
In reply to: null pointers by nix
Parent article: Who maintains dpkg?

No go. How would dlsym() work if that were true? Also, an IA64 function pointer is a pointer to a function descriptor, which is a pair of values -- a pointer to the start of the code and the global pointer to use for that function. The pointer to the descriptor is a normal data pointer, and is what corresponds to the C-level function pointer.

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Ah, oops. Forgot about that. (It's tripped me up before, too.)

(I still have memories of pointer sizing bugs in the area of dlsym(), but 
I can't remember what they were.)